Instant center defined
Throughout the rest of this chapter the term IC will be used in describing and determine several common ช่วงล่าง parameter, To help achieve clarity in these discussions some comments about what is an IC, are in order. The word “instant” means at that particular position of the linkage.
“Center” refers to a projected imaginary point that is effectively the pivot point of the linkage at that instant. Figure 17.5 suggests how two short links can be replaced with one longer on. As the linkage is moved,
the center moves,
so proper geometric design not only establishes all the instant centers in their desired position at ride height, but also controls how fast and in what direction they move with ช่วงล่าง travel.